//Drop-in content box- By Dynamic Drive
//For full source code and more DHTML scripts, visit
//http://www.dynamicdrive.com
//This credit MUST stay intact for use

var ie=document.all
var dom=document.getElementById
var ns4=document.layers
var calunits=document.layers? "" : "px"
var bouncelimit=32 // (must be divisible by 8)
var direction="up"
function initbox(){
  if (!dom&&!ie&&!ns4)
    return
  crossobj=(dom)?document.getElementById("dropin").style : ie? document.all.dropin : document.dropin
  scroll_top=(ie)? truebody().scrollTop : window.pageYOffset
  crossobj.top=scroll_top-250+calunits
  crossobj.left = getCoords("dropin").x+"px";
  crossobj.visibility=(dom||ie)? "visible" : "show"
  dropstart=setInterval("dropin()",50)
}
function dropin(){
  scroll_top=(ie)? truebody().scrollTop : window.pageYOffset
  if (parseInt(crossobj.top)<getCoords("dropin").y)
    crossobj.top=parseInt(crossobj.top)+40+calunits
  else{
    clearInterval(dropstart)
    bouncestart=setInterval("bouncein()",50)
  }
}
function bouncein(){
  crossobj.top=parseInt(crossobj.top)-bouncelimit+calunits
  if (bouncelimit<0)
    bouncelimit+=8
  bouncelimit=bouncelimit*-1
  if (bouncelimit==0){
    clearInterval(bouncestart)
  }
}
function dismissbox(){
  if (window.bouncestart) clearInterval(bouncestart)
  crossobj.visibility="hidden"
}
function truebody(){
  return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}
function getCoords(id) {
  var elem = document.getElementById(id);
  return { x:(truebody().clientWidth - parseInt(elem.style.width)) / 2,
    y:(truebody().clientHeight - parseInt(elem.style.height)) / 2 
  }
}
window.onload=initbox